With a maximum budget of $1,000 (and not a cent more), what speakers would you recommend to upgrade my audio to a 5.1 system? I'm set on my receiver, the Denon AVR-1912 (http://usa.denon.com/US/Pages/Custom...uctDetail.aspx), which I just bought tonight. The system will join my existing 50-inch plasma TV in a viewing room that's a little over 200 sq ft. It will be used for experiencing films and also for listening to music. Occasionally it will be used for games. What do you think?